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Degradation Origin of Green Emitting Y2SiO5: Tb Phosphors for Projection Television CRT
N. Hashimoto
T. Maegawa
M. Okumura
K. Yoshizaki
K. Sato
  DOI :  10.2352/CIC.1993.1.1.art00012  Published Online :  January 1993
Abstract

Projection television systems can produce a large screen display. In this system, images on the faceplate of three primary color cathode-ray tubes are magnified on the large viewing screen. A phosphor screen in these cathode-ray tubes is excited by higher density electrons as compared to direct view type, so that the deterioration of light output from the phosphor screen is serious problem for picture quality similar to the browning of faceplate glasses. Especially green light emitting phosphors are used in the most harsh conditions of electron bombardment.Several green-emitting phosphors are particularly used for projection CRTs, for example, Zn2SiO4: M n Y3 Al5 0l2:Tb Y3(Al,Ga)5O12:Tb LaOCl:Tb LaOBr:Tb and Y2SiO5:Tb. And, it was reported that impurity ions can affect the degradation of emission in Y3Al5Ol2:Tb and Y3(Al,Ga)5Ol2:Tb.

Journal Title : Color and Imaging Conference
Publisher Name : Society of Imaging Science and Technology
Publisher Location : 7003 Kilworth Lane, Springfield, VA 22151, USA
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 DOI 10.2352/CIC.1993.1.1.art00012
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N. Hashimoto, T. Maegawa, M. Okumura, K. Yoshizaki, K. Sato, "Degradation Origin of Green Emitting Y2SiO5: Tb Phosphors for Projection Television CRT"  in Proc. IS&T 1st Color and Imaging Conf.,  1993,  pp 52 - 54,  https://doi.org/10.2352/CIC.1993.1.1.art00012

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Copyright © Society for Imaging Science and Technology 1993
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Color and Imaging Conference
color imaging conf
2166-9635
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA
2166-9635(19930101)1993:1L.52;1-
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Articles
Degradation Origin of Green Emitting Y2SiO5: Tb Phosphors for Projection Television CRT
HashimotoN.
MaegawaT.
OkumuraM.
YoshizakiK.
SatoK.
01011993
1993
1
52
54
1993
Projection television systems can produce a large screen display. In this system, images on the faceplate of three primary color cathode-ray tubes are magnified on the large viewing screen. A phosphor screen in these cathode-ray tubes is excited by higher density electrons as compared to direct view type, so that the deterioration of light output from the phosphor screen is serious problem for picture quality similar to the browning of faceplate glasses. Especially green light emitting phosphors are used in the most harsh conditions of electron bombardment.Several green-emitting phosphors are particularly used for projection CRTs, for example, Zn2SiO4: M n Y3 Al5 0l2:Tb Y3(Al,Ga)5O12:Tb LaOCl:Tb LaOBr:Tb and Y2SiO5:Tb. And, it was reported that impurity ions can affect the degradation of emission in Y3Al5Ol2:Tb and Y3(Al,Ga)5Ol2:Tb.